Holmium Chunk

High Purity Ho Chunk
CAS 7440-60-0


Product Product Code Order or Specifications
(2N) 99% Holmium Chunk HO-M-02-CK Contact American Elements
(3N) 99.9% Holmium Chunk HO-M-03-CK Contact American Elements
(4N) 99.99% Holmium Chunk HO-M-04-CK Contact American Elements
(5N) 99.999% Holmium Chunk HO-M-05-CK Contact American Elements

CHEMICAL
IDENTIFIER		 Formula CAS No. PubChem SID PubChem CID MDL No. EC No Beilstein
Re. No. 		SMILES
Identifier 		InChI
Identifier 		InChI
Key
Ho 7440-60-0 24869411 23988 MFCD00011049 231-169-0 N/A [Ho] InChI=1S/Ho KJZYNXUDTRRSPN-UHFFFAOYSA-N

PROPERTIES Mol. Wt. Appearance Density Tensile Strength Melting Point Boiling Point Thermal Conductivity Electrical Resistivity Eletronegativity Specific Heat Heat of Vaporization Heat of Fusion MSDS
164.93 Silvery 8.795 gm/cc N/A 1474 °C 2695°C 0.162 W/cm/ K @ 298.2 K 87.0 microhm-cm @ 25°C 1.2 Paulings 0.0393 Cal/g/ K @ 25 °C 67 K-Cal/gm atom at 2695°C 4.10 Cal/gm moleSafety Data Sheet

High Purity ChunkAmerican Elements specializes in producing high purity Holmium Chunk using crystallization, solid state and other ultra high purification processes such as sublimation. Standard Chunk pieces are amorphous uniform pieces ranging in size from 5-15 mm. American Elements specializes in producing custom compositions for commercial and research applications and for new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into granules, rod, bar or plate form, as well as other machined shapes and through other processes such as nanoparticles (See also application discussion at Nanotechnology Information and at Quantum Dots) and in the form of solutions and organometallics. See research below. We also produce Holmium as rod, pellets, powder, pieces, disc, ingot, wire, and in compound forms, such as oxide. Other shapes are available by request.

Holmium(Ho)atomic and molecular weight, atomic number and elemental symbolHolmium is a Block F, Group 3, Period 6 element. The number of electrons in each of Holmium's shells is 2, 8, 18, 29, 8, 2 and its electronic configuration is [Xe] 4f11 6s2. In its elemental form holmium's CAS number is 7440-60-0. The holmium atom has a radius of 174.3.pm and its Van der Waals radius is unknown. Holmium is only slightly toxic. Holmium has the highest magnetic moment (10.6µB) of any naturally occurring element. Because of this it has been used to create the highest known magnetic fields by placing it within high strength magnets as a pole piece or magnetic flux concentrator. This magnetic property also has value in yttrium-iron-Elemental HolmiumgarnetHolmium Bohr Model(YIG) lasers for microwave equipment. Building on previous research into the role of rare earths in stabilizing oxide-based ion conductor materials, in late 2012 scientists from Turkey's Gazi University developed a novel electrospinning technique that allowed them to combine Holmium Oxide (Holmia) and Bismuth Oxide into a new, highly conductive ceramic nanofiber that may have future importance for fuel cell technology and other electrochemical applications. Holmium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Holmium lases at a human eye safe 2.08 microns allowing its use in a variety of medical and dental applications in both yttrium-aluminum-garnet (YAG) and yttrium-lanthanum-fluoride (YLF) solid state lasers. The wavelength allows for use in silica fibers designed for shorter wavelengths while still providing the cutting strength of longer wave length equipment. Holmium is found in gadolinite, monazite, and other rare-earth minerals. Holmium was first discovered by J.L. Soret in 1878. See Holmium research below.


HEALTH, SAFETY & TRANSPORTATION INFORMATION
Danger
H228
N/A
N/A
N/A
N/A
N/A
3
Flame-Flammables        

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PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.


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Recent Research & Development for Holmium

  • Use of holmium:YAG laser in posterior urethral valves: Another method of fulguration. Mandal S, Goel A, Kumar M, Singh MK, Singh V, Sankhwar SN, Singh BP, Dalela D. J Pediatr Urol. 2013 May 6. doi:pii: S1477-5131(13)00090-9. 10.1016/j.jpurol.2013.03.015.
  • Holmium laser versus conventional transurethral resection of the bladder tumor. Teng JF, Wang K, Yin L, Qu FJ, Zhang DX, Cui XG, Xu DF. Chin Med J (Engl). 2013 May;126(9):1761-5.
  • Treatment of urethral/bladder neck stricture after high-intensity focused ultrasound for prostate cancer with holmium: yttrium-aluminium-garnet laser. Cho WJ, Kim TH, Lee HS, Chung JW, Lee HN, Lee KS. Int Neurourol J. 2013 Mar;17(1):24-9. doi: 10.5213/inj.2013.17.1.24.
  • Minimally invasive management with holmium laser in total urinary tract calculi. Zhang X, Yu J, Yang R. Photomed Laser Surg. 2013 May;31(5):230-5. doi: 10.1089/pho.2012.3455.
  • Relationship of postoperative recatheterization and intraoperative bladder distention volume in holmium laser enucleation of the prostate for benign prostatic hyperplasia. Kim HJ, Lee HY, Song SH, Paick JS. Korean J Urol. 2013 Feb;54(2):89-94. doi: 10.4111/kju.2013.54.2.89.
  • Flexible cystoscopy and Holmium:YAG laser ablation for recurrent non-muscle invasive bladder carcinoma under local anaesthesia. Syed HA, Talbot N, Abbas A, Macdonald D, Jones R, Marr TJ, Rukin NJ. J Endourol. 2013 Mar 28.
  • Postoperative infectious complications in our early experience with holmium laser enucleation of the prostate for benign prostatic hyperplasia. Shigemura K, Tanaka K, Haraguchi T, Yamamichi F, Muramaki M, Miyake H, Fujisawa M. Korean J Urol. 2013 Mar;54(3):189-93. doi: 10.4111/kju.2013.54.3.189.
  • Age-stratified outcomes of holmium laser enucleation of the prostate. Mmeje CO, Nunez-Nateras R, Warner JN, Humphreys MR. BJU Int. 2013 Mar 19. doi: 10.1111/bju.12063.
  • Safety and efficacy of pneumatic lithotripters versus holmium laser in management of ureteral calculi: a randomized clinical trial. Razzaghi MR, Razi A, Mazloomfard MM, Golmohammadi Taklimi A, Valipour R, Razzaghi Z. Urol J. 2013 Winter;10(1):762-6.
  • Risk Factors for Septic Shock After Mini-percutaneous Nephrolithotripsy With Holmium Laser. Li K, Liu C, Zhang X, Liu Y, Wang P. Urology. 2013 Mar 14. doi:pii: S0090-4295(13)00135-0. 10.1016/j.urology.2013.01.035.
  • High power operation of cladding pumped holmium-doped silica fibre lasers. Hemming A, Bennetts S, Simakov N, Davidson A, Haub J, Carter A. Opt Express. 2013 Feb 25;21(4):4560-6. doi: 10.1364/OE.21.004560.
  • Holmium-doped Lu2O3, Y2O3, and Sc2O3 for lasers above 2.1 µm. Koopmann P, Lamrini S, Scholle K, Schäfer M, Fuhrberg P, Huber G. Opt Express. 2013 Feb 11;21(3):3926-31. doi: 10.1364/OE.21.003926.
  • (Butane-1,2,3,4-tetraol-?(3) O (1),O (2),O (3))(ethanol-?O)tris-(nitrato-?(2) O,O')holmium(III). Hua XH, Xue JH, Yang LM, Xu YZ, Wu JG. Acta Crystallogr Sect E Struct Rep Online. 2013 Mar 1;69(Pt 3):m162-3. doi: 10.1107/S160053681300305X.
  • Holmium laser enucleation of the prostate for persistent lower urinary tract symptoms after prior benign prostatic hyperplasia surgery. Jaeger CD, Krambeck AE. Urology. 2013 May;81(5):1025-9. doi: 10.1016/j.urology.2013.01.019.
  • Treatment of giant pyogenic granuloma with the Nd/YAG holmium laser: a case report. Yang C, Liu S. J Cosmet Laser Ther. 2013 Mar 6.
  • Does prostate morphology affect outcomes after holmium laser enucleation? Wisenbaugh ES, Nunez-Nateras R, Mmeje CO, Warner JN, Humphreys MR. Urology. 2013 Apr;81(4):844-8. doi: 10.1016/j.urology.2013.01.006.
  • Holmium laser fulguration of superficial urothelial carcinoma of the pendulous urethra. Liss MA, Ronningen L, Dash A. Indian J Urol. 2012 Oct;28(4):427-9. doi: 10.4103/0970-1591.105758.
  • Holmium laser division of a suture causing entrapment of a drainage tube after laparoscopic nephrectomy. Luo GH, Xia SJ, Sun ZL. Int Urol Nephrol. 2013 Apr;45(2):355-7. doi: 10.1007/s11255-013-0387-1.
  • Evaluation of Preoperative Measurement of Stone Surface Area as a Predictor of Stone-Free Status After Combined Ureteroscopy with Holmium Laser Lithotripsy: A Single-Center Experience. Ito H, Kawahara T, Terao H, Ogawa T, Yao M, Kubota Y, Matsuzaki J. J Endourol. 2013 Apr 3.
  • Fiber-optic manipulation of urinary stone phantoms using holmium:YAG and thulium fiber lasers. Blackmon RL, Case JR, Trammell SR, Irby PB, Fried NM. J Biomed Opt. 2013 Feb;18(2):28001. doi: 10.1117/1.JBO.18.2.028001.